7012 CD/P4AQBCC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7012 CD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
1.61 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
72 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
23850 lbf
Radial static load rating
31500 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7012 CD/P4AQBCC Bearing Product Overview & Core Advantages
The 7012 CD/P4AQBCC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This bearing is supplied as a Quadruplex Back-to-Back (QBC) matched set, offering superior stability and the ability to handle complex combined loads, including significant radial and axial forces. Manufactured to a P4A tolerance class, it ensures high running accuracy and is pre-lubricated for immediate use, making it an ideal choice for high-precision, high-rigidity machinery.
7012 CD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing series and size designation (60mm bore, 95mm OD, 72mm width). |
| CD | Indicates a 15° contact angle and specific internal design optimized for high rigidity. |
| P4A | Denotes a high-precision tolerance class exceeding ABEC 7 standards, ensuring minimal runout and vibration. |
| QBCC | Signifies a Quadruplex Back-to-Back (QBC) matched set with a Moderate (Class C) preload applied for optimal stiffness and rotational accuracy. |
7012 CD/P4AQBCC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The Quadruplex Back-to-Back (QBC) arrangement of four bearings creates an extremely rigid bearing system, effectively resisting moment loads and maintaining shaft positioning under heavy combined loads.
- High Load Capacity: The 15° contact angle and robust construction, featuring chrome steel rings and balls, provide high dynamic and static load ratings (23,850 lbf / 31,500 lbf).
- Precision Performance: Compliance with the P4A tolerance class guarantees high running accuracy, low noise, and minimal heat generation, which is critical for high-speed applications (limiting speed of 34,000 rpm).
- Optimized for Speed: The lightweight phenolic cage minimizes centrifugal forces, contributing to the bearing's high limiting speed and smooth operation.
- Ready-to-Install: The bearing is pre-lubricated, simplifying installation and providing immediate protection upon startup.
7012 CD/P4AQBCC Bearing Typical Application Areas
This precision bearing set is engineered for high-performance applications where maximum rigidity and accuracy are paramount. Key industries and machinery include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes and Robotic Drives.
- High-Frequency Motors and Spindles.
- Medical and Laboratory Equipment requiring precise rotational movement.
- Aerospace Actuation Systems.
